CN105068252A - Multi-parameter adjustable binocular augmented reality experimental device - Google Patents

Abstract

The invention provides a multi-parameter adjustable binocular augmented reality experimental device. The multi-parameter adjustable binocular augmented reality experimental device includes an eye-distance adjustment module; the eye-distance adjustment module is connected with one pair of imaging modules which are in axis symmetry; a height adjustment module is installed below each imaging module; the imaging module includes an imaging system and an imaging shell, wherein the imaging system is installed in the imaging shell; the imaging shell includes a combination component and an inner cylinder; one end of the combination component is provided with an outer cylinder; and the inner cylinder can stretch and contract along the inner wall of the outer cylinder. With the multi-parameter adjustable binocular augmented reality experimental device adopted, multiple augmented reality display parameters can be adjusted, binocular vision imaging can be realized, and preset images can be displayed clearly and reliably, and virtual and real image superposition can be carried out reasonably. The multi-parameter adjustable binocular augmented reality experimental device has the advantages of large field of view, full-color display, adjustability in image magnification factor, height, double-window distance and binocular superposition degree, and the like.

Description

The binocular augmented reality experimental provision that a kind of multiparameter is adjustable

Technical field

The present invention relates to optical imaging field, the binocular augmented reality experimental provision that especially a kind of multiparameter is adjustable.

Background technology

Augmented reality refers to use optical principle and electronic equipment, in the real scene that the user that the information of the dummy object of the two dimension of Practical computer teaching or three-dimensional, virtual scene or system is added to sees, create the technology in the world that an actual situation combines, thus the enhancing realized reality, to reach the sensory experience of exceeding reality.Augmented reality not only has a wide range of applications in fields such as visual, the virtual training of the manufacture and exploit of sophisticated weapons, aircraft, data model, amusement and art, and due to it, there is the characteristic can carrying out strengthening to true environment display translation, medical research with dissect train, the field such as exact instrument manufacture and maintenance, military aircraft navigate, engineering design and tele-robotic control, all have very wide prospect.

Nowadays, though the various new products on the market based on this technology emerge in an endless stream, but be at present still in the starting stage to the research and development of augmented reality equipment, prior art Problems existing is: its display effect is generally monocular, monochrome, and visual field is generally too small, maybe cannot superpose outdoor scene and only can show virtual image, imaging effect is not good, enlargement factor is fixed, non-dismountable, during fault, maintenance cost is high.

Summary of the invention

Goal of the invention: in order to solve above-mentioned existing issue, the present invention proposes the adjustable binocular augmented reality experimental provision of a kind of multiparameter.

Technical scheme:

In order to realize foregoing invention object, the technical solution used in the present invention is: the binocular augmented reality experimental provision that a kind of multiparameter is adjustable, comprise eye-distance adjustment module, eye-distance adjustment module is connected with a pair axisymmetric image-forming module, below each image-forming module, electronic controlled height adjustment is housed; Image-forming module comprises imaging system and imaging housing, and imaging system is arranged in imaging housing; Described imaging housing comprises subassembly and inner core, and subassembly one end is provided with urceolus, and inner core can stretch along outer tube inner wall.

Further, described imaging system comprises: light source module: comprise micro-display image source, provides the plane diverging light image of the clear degree of color high-definition, and shown is real image; Light source driver module: power to light source module and control to show image; Light path converting module: comprise semi-transparent semi-reflecting prism; Amplify adjustment module: comprise a concave mirror, be arranged in the inner core of described imaging housing, and regulate enlargement ratio by the flexible of inner core with the distance changing concave mirror and semi-transparent semi-reflecting prism; Form: comprise a transparent window, for eye-observation;

Further, the light that light source module sends via light path converting module semi-transparent semi-reflecting once after, pass to amplification adjustment module; Amplify adjustment module and carry out amplification process back reflection recovering light path modular converter, light path converting module is carried out semi-transparent semi-reflecting again, and sends from form to human eye, becomes to amplify the virtual image.

Further, described subassembly comprises semi-transparent semi-reflecting prismatic decomposition mirror support and light source bracket, and described urceolus is located at one end of semi-transparent semi-reflecting prismatic decomposition mirror support, and the other end of semi-transparent semi-reflecting prismatic decomposition mirror support installs light source bracket.

Further, described semi-transparent semi-reflecting prism is square form.

Further, inner core external diameter 1-2mm less of urceolus internal diameter.

Further, described inner core by inner core upper cover and inner core lower cover assembled by the mutual buckle of cylindrical small-sized teeth groove on surface of contact.

Further, described eye-distance adjustment module comprises the cross bar be movably connected by universal joint for a pair, and one end of every root cross bar is hinged on the top of image-forming module.

Further, described electronic controlled height adjustment comprises adjuster bar and base, and adjuster bar top is connected with image-forming module, and adjuster bar bottom is provided with external thread, and base inner wall is provided with the internal thread suitable with external thread, and adjuster bar is screwed on base.

Further, the transparent window of described form is the square of length of side 10cm.

Beneficial effect: compared with prior art, the invention provides multinomial augmented reality display parameter to regulate, it has Large visual angle, full-color EL display, image magnification is adjustable, height adjustable, double vision window be apart from the advantage such as adjustable, binocular superposition degree is adjustable, binocular vision imaging can be realized, clear reliable display predetermined image, and rationally carry out the function of actual situation imaging importing.In addition, the present invention also provides components and parts easily to change channel, and the existing augmented reality equipment higher than integration degree has higher exploitation expansion, also can save maintenance cost during fault simultaneously.It can be used for interface simulation and the dependence test of the application of augmented reality class from now on, to developer provide one multi-functional, multi-angle, multi-faceted experiment porch.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is schematic diagram of the present invention;

Fig. 3 is the mutually axisymmetric image-forming module principle schematic of the present invention;

Fig. 4 is light path principle figure of the present invention;

Fig. 5 is inner core upper cover schematic diagram in the present invention;

Fig. 6 is inner core lower cover schematic diagram in the present invention;

Fig. 7 is middle light source bracket schematic diagram in the present invention;

Fig. 8 is semi-transparent semi-reflecting prismatic decomposition mirror support schematic diagram in the present invention;

Fig. 9 is adjuster bar schematic diagram in the present invention;

Figure 10 is base schematic diagram in the present invention;

Figure 11 is imaging system coloured image display effect figure in the present invention;

Figure 12 is augmented reality design sketch of the present invention.

Embodiment

Below by a most preferred embodiment, the technical program is described in detail, but protection scope of the present invention is not limited to described embodiment.

As shown in Figure 1, 2, the binocular augmented reality experimental provision that a kind of multiparameter is adjustable, comprises eye-distance adjustment module, eye-distance adjustment module is connected with a pair axisymmetric image-forming module, below each image-forming module, electronic controlled height adjustment is housed; Image-forming module comprises imaging system and imaging housing, and imaging system is arranged in imaging housing; Described imaging housing comprises subassembly and inner core 1, and subassembly one end is provided with urceolus 2, and inner core 1 can stretch along urceolus 2 inwall.Preferred subassembly comprises semi-transparent semi-reflecting prismatic decomposition mirror support and light source bracket, and described urceolus is located at one end of semi-transparent semi-reflecting prismatic decomposition mirror support, and the other end of semi-transparent semi-reflecting prismatic decomposition mirror support installs light source bracket.

As shown in Figure 3, imaging system comprises: light source module: comprise micro-display image source, provides the plane diverging light image of the clear degree of color high-definition, and shown is real image.This example adopts the micro-display image source of OLED, and pixel is 1024*768, is of a size of 17mm*17mm*2mm, colored display.Power with Micro-USB interface, connect computer liquid-crystal display transmission pictorial information with HDMI high definition video interface.In actual use procedure, also replaceable is the micro-display image source of other types such as same size LCOS image source or LED image source.

Light source driver module: power to light source module and control to show image.This example adopts OLED micro-display image source supporting driver module, function for be powered to OLED by Micro-USB interface, to light display screen.If light source module is replaced by the image source of other types, driving need select the supporting driving of light source.

Light path converting module: comprise semi-transparent semi-reflecting prism.The semi-transparent semi-reflecting prism that this example employing rib length is 10cm*10cm is as the core component of light path converting module.Incident ray is passed to follow-up amplification adjustment module after once semi-transparent semi-reflecting process, and receives the light amplifying adjustment module and pass back, after doing the semi-transparent semi-reflecting process of second time, be projected to eyes imaging through form.Main index path as shown in Figure 4.

Amplify adjustment module: comprise a concave mirror, be arranged in the inner core 1 of described imaging housing, and regulate enlargement ratio by the flexible of inner core with the distance changing concave mirror and semi-transparent semi-reflecting prism.This example adopts diameter 10cm, and focal length is the column type planoconcave mirror of 5cm, the light signal that receiving light path modular converter transmits, and is undertaken amplifying rear transmission recovering light path modular converter by concave mirror image-forming principle.Actual to use, replaceable is the concave mirror of same size, other focus type.Wherein, focal length is larger, and concave mirror is adjusted the distance and regulated susceptibility lower; Focal length is less, concave mirror adjust the distance regulate susceptibility higher.During use, inner core 1 more embeds urceolus 2 to light source direction, and enlargement factor is larger; Inner core 1 is more outwards extracted away from light source, and enlargement factor is less.

Form 3: comprise a transparent window, for eye-observation.The preferred transparent window of the present invention is the square of length of side 10cm, and the beam projecting face of semi-transparent semi-reflecting Amici prism and opposite thereof keep large area printing opacity, build the Large visual angle of binocular vision imaging.

Described amplification adjustment module principle of work is as follows:

True origin is taken at concave mirror center, if the focal length of concave mirror is f (f<0), the position s (s<0) of thing, thing distance concave mirror centre distance is d=|s|, as position be s'.According to concave mirror imaging formula

$\frac{1}{s}+\frac{1}{s^{\&prime;}}=\frac{1}{f}---\left(1.1\right)$

Can obtain

$\frac{1}{s^{\&prime;}}=\frac{1}{f}-\frac{1}{s}=\frac{s-f}{sf}---\left(1.2\right)$

So the magnification of picture

$\mathrm{\&beta;}=-\frac{s^{\&prime;}}{s}=\frac{f}{f-s}---\left(1.3\right)$

Owing to requiring the virtual image that concave mirror becomes to amplify in the present system, to realize actual situation superposition, therefore there is f-s < 0 and f < 0, therefore

$\left|\mathrm{\&beta;}\right|=\mathrm{\&beta;}=\frac{f}{f-s}---\left(1.4\right)$

According to formula (1.4), two kinds of phenomenons in experiment are analyzed below.

The relation of magnification and f:

Experimental phenomena shows, and concave mirror is put in same position, but when focal length is different, as magnification different, therefore need the local derviation asking magnification to f here, by above formula (1.4):

$\frac{\&part;\mathrm{\&beta;}}{\&part;f}=\frac{f-s-f}{{(f-s)}^2}=\frac{-s}{{(f-s)}^2}>0---\left(1.5\right)$

Therefore magnification increases along with the increase of focal length, therefore selects the concave mirror of little focal length (getting the absolute value of focal length), and amplification effect is wanted obviously in the concave mirror of large focal length.

The rate of change of magnification and the relation of f:

Experimental phenomena shows, the concave mirror that focal length is different, during mobile identical distance, as the change of magnification different.Therefore need the local derviation asking magnification to s here, try to achieve the relation of magnification and s, and then local derviation is asked to f, try to achieve the impact of f on magnification change rate.Obtained by above formula (1.5)

$\frac{\&part;\mathrm{\&beta;}}{\&part;s}=\frac{sf}{{(f-s)}^2}>0---\left(1.6\right)$

Can conclusion be obtained: along with the increase of s, namely object from face mirror more close to time, enlargement factor is less.Obtained by above formula (1.6) again

$\frac{\&part;\left(\frac{\&part;\mathrm{\&beta;}}{\&part;s}\right)}{\&part;f}=\frac{s{(f-s)}^2-2sf(f-s)}{{(f-s)}^4}=\frac{s^3-{\mathrm{sf}}^2}{{(f-s)}^4}=\frac{s(s+f)(s-f)}{{(f-s)}^2}>0---\left(1.7\right)$

Therefore along with the increase (namely | the reduction of f|) of f, magnification can increase with the rate of change of s, and the magnification change rate therefore observing the less concave mirror of focal length can much larger than the larger concave mirror of focal length.

Therefore, the concave mirror that focal length is less can realize the coarse adjustment of system magnification, and the larger concave mirror of focal length can realize the fine setting of system magnification.When building light path, light source is as thing, and according to concave mirror image-forming principle, thing is placed in one times to two focus length to become to stand upside down and amplifies the virtual image, if light source to the distance at concave mirror center as s.F can be changed by the concave mirror changing different model thus, or by the flexible change s of lens barrel in structure member, make it change between f to 2f, realize the adjustment of virtual image forming and enlargement ratio.According to concave mirror image-forming principle, described enlargement ratio can regulate between infinitely great times at 1 times in theory.

In the present embodiment, it is 0-3cm that inner core twitches adjustable extent along urceolus, and light source module distance urceolus is near light source side Edge Distance 1cm, and therefore s span is 1-4cm.Following table is change the example parameter of concave mirror gained enlargement factor and lens barrel distance adjustment.(be convenience of calculation herein, get s > 0, f > 0, do not affect asking for of enlargement factor)

The preferred transparent window of the present invention is the square of length of side 10cm, and in order to coordinate transparent window size, therefore the present embodiment chooses the concave mirror that diameter is 10cm.As seen from the above table, focal length is the adjustment multiple only 1.11-1.67 times of concave mirror in permission range of adjustment of 10cm, can be used for the fine setting to image size; And focal length to be concave mirror between 3cm-4cm can realize 1.33 times to the amplification effect of+∞ multiple, can be used for the coarse adjustment of image size, or for requiring higher occasion to enlargement factor.As theoretical infinitely great enlargement factor need be reached, the concave mirror of below focal length 4cm should be selected; Require lower to enlargement factor, the concave mirror of focal length 4cm-5cm can be selected; Only need finely tune image size, the concave mirror of focal length 5cm-10cm can be selected.

Two image-forming modules carry out binocular imaging by a set of binocular imaging convergence strategy, and its concrete steps are as follows:

The theoretical emergent pupil height of the imaging system 1, first making mutually axisymmetric left and right two overlap in image-forming module overlaps with the eye pupil centre-height of human eye.Electronic controlled height adjustment comprises adjuster bar 6 and base 7, and adjuster bar 6 top is connected with image-forming module, and adjuster bar 6 bottom is provided with external thread, and base 7 inwall is provided with the internal thread suitable with external thread, and adjuster bar 6 is screwed on base (7).In the present embodiment, make the form height of image-forming module consistent with the eye pupil height of human eye by rotation adjusting lever.As shown in Figure 1, adjuster bar rotates evenly lifting by institute's threading, realizes the motor adjustment of vertical direction.

2, according to the spacing between user's binocular, the horizontal range between two image-forming modules is regulated.As shown in Figure 1,

Eye-distance adjustment module comprises a pair cross bar (4) be movably connected by universal joint (5), and one end of every root cross bar (4) is hinged on the top of image-forming module.The horizontal range between two image-forming modules can be changed by adjustment universal joint.

3, be superposed to example with 50% binocular: after the emergent pupil center of optical system is determined, then the shooting angle of light can be changed by rotating universal joint.By each relative to the dead ahead optical axis of human eye for the optical axis of two optical systems outward-dipping 7.5 °, so just achieve the binocular superposition of 50%. make the total visual field of level increase to 45 °.Wherein, the concrete meaning of 50% binocular superposition degree is: make left-eye image and eye image respectively have the identical image of 50% to carry out by adjustment beam projecting angle overlapping, thus the width that permeates when making this two width image image in human eye.And the binocular superposition of other degree can be derived according to this.

The method of binocular image convergence strategy is:

First, the picture that two cover monocular system displays are the same is made.If the former total visual field of monocular system level is θ, if perpendicular to form 3, and be optical axis through the axle at form center.If make the optical axis of two optical systems outward-dipping certain angle Δ θ each relative to the human eye dead ahead optical axis make two cover monocular system imagings superpose mutually, then the total visual field of level after superposition becomes

θ'＝θ+2Δθ(1.8)

Superposition rate α is now

$\mathrm{\&alpha;}=\frac{\frac{\mathrm{\&theta;}}{2}-\mathrm{\&Delta;}\mathrm{\&theta;}}{\frac{\mathrm{\&theta;}}{2}}---\left(1.9\right)$

According to above-mentioned rule, experimental provision can be regulated as required, make binocular superposition rate meet user's request.

The light that light source module sends via light path converting module semi-transparent semi-reflecting once after, pass to amplification adjustment module; Amplify adjustment module and carry out amplification process back reflection recovering light path modular converter, light path converting module is carried out semi-transparent semi-reflecting again, and sends to human eye from form 3, becomes to amplify the virtual image.Wherein semi-transparent semi-reflecting prism is square form.

Inner core 1 upper cover of imaging system as shown in Figure 5, inner core 1 lower cover as shown in Figure 6, inner core 1 by inner core 1 upper cover and inner core 1 lower cover assembled by the mutual buckle of cylindrical small-sized teeth groove on surface of contact.Inner core 1 external diameter 1.5mm less of urceolus 2 internal diameter, twitches inner core 1 wall and realizes extending, push and realize shrinking.Urceolus 2 upper and lower sides relative position is each makes a call to a threaded hole, screws in screw continue to twist to reach the fixing of inner core 1 and urceolus 2 by installing correspondingly-sized screw.During dismounting, screw is taken out, and all extraction inner core 1 completes dismounting.

This example adopts ABS material to carry out 3D and prints rapid shaping technique making parts, and installation steps of the present invention are as follows:

1, embedded in Fig. 7 light source bracket by micro-for OLED display image source, corner is fixed with screw

2, light source driver module is connected with micro-display image source with the slit of connecting line through Fig. 7 light source bracket side of external image display.

3, semi-transparent semi-reflecting prism is embedded in the square of light source bracket, adjust semi-transparent semi-reflecting prism attitude to adapt to correct light path, by light source bracket and the split of semi-transparent semi-reflecting prismatic decomposition mirror support.

4, concave mirror is embedded in the groove of inner core 1 upper cover one end, and with the split of inner core 1 lower cover as inner core 1.Again inner core 1 is put into the urceolus 2 of semi-transparent semi-reflecting prismatic decomposition mirror support one end.

5, four small columns below the light source bracket shown in Fig. 7 Fig. 8 and semi-transparent semi-reflecting prismatic decomposition mirror support are embedded in the corresponding aperture position of the adjuster bar 6 shown in Fig. 9, and by adjuster bar 6 and base 7 rotation combination, be adjusted to suitable height.

6, cross bar and universal joint are assembled by upper aperture position.And be adjusted to suitable distance.

Light micro-display light source through HDMI, suitably regulate the corresponding parameter of this cover experimental provision, steady and audible imaging effect can be obtained.Namely image information is projected in user's eyes after this experimental provision process transforms, and forms the colored virtual image, and rationally superposes with outdoor scene, realizes the effect of augmented reality.By regulating the position of inner core 1 in the urceolus 2 of semi-transparent semi-reflecting prismatic decomposition mirror support, can realize the function of image magnification flexible, and after amplifying, image does not distort, reduction degree is high.Figure 11 illustrates the imaging effect of coloured image, and Figure 12 illustrates the effect that the become virtual image superposes with outdoor scene.

Invention enhances reality technology equipment imaging effect, and provide a set of enlargement factor to the researchist of exploitation augmented reality equipment is adjustable, height adjustable, double vision window apart from adjustable, binocular superposition degree is adjustable and the removable experimental provision of each main element, to reach the display effect of optimum and stronger experimental performance.By adjustment, the rotation of each parts, make optical axis direction extrinsic deflection, thus increase visual field, realize different binocular superposition degree.And semi-transparent semi-reflecting prism, concave mirror, micro-display light source part can be dismantled at any time and change, handled easily.

Described concrete case study on implementation is only better case study on implementation of the present invention, is not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, all should as technology category of the present invention.

Claims (9)

1. the binocular augmented reality experimental provision that multiparameter is adjustable, is characterized in that, comprises eye-distance adjustment module, eye-distance adjustment module is connected with a pair axisymmetric image-forming module, below each image-forming module, electronic controlled height adjustment is housed; Image-forming module comprises imaging system and imaging housing, and imaging system is arranged in imaging housing; Described imaging housing comprises subassembly and inner core (1), and subassembly one end is provided with urceolus (2), and inner core (1) can stretch along urceolus (2) inwall.

2. the binocular augmented reality experimental provision that multiparameter described is according to claim 1 adjustable, it is characterized in that, described imaging system comprises:

Light source module: comprise micro-display image source, provides the plane diverging light image of the clear degree of color high-definition, and shown is real image;

Light source driver module: power to light source module and control to show image;

Light path converting module: comprise semi-transparent semi-reflecting prism;

Amplify adjustment module: comprise a concave mirror, be arranged in the inner core (1) of described imaging housing, and regulate enlargement ratio by the flexible of inner core (1) with the distance changing concave mirror and semi-transparent semi-reflecting prism;

Form (3): comprise a transparent window, for eye-observation;

The light that light source module sends via light path converting module semi-transparent semi-reflecting once after, pass to amplification adjustment module; Amplify adjustment module and carry out amplification process back reflection recovering light path modular converter, light path converting module is carried out semi-transparent semi-reflecting again, and sends to human eye from form (3), becomes to amplify the virtual image.

3. the binocular augmented reality experimental provision that multiparameter described is according to claim 1 adjustable, it is characterized in that, described subassembly comprises semi-transparent semi-reflecting prismatic decomposition mirror support and light source bracket, described urceolus (2) is located at one end of semi-transparent semi-reflecting prismatic decomposition mirror support, and the other end of semi-transparent semi-reflecting prismatic decomposition mirror support installs light source bracket.

4. the binocular augmented reality experimental provision that multiparameter described is according to claim 2 adjustable, it is characterized in that, described semi-transparent semi-reflecting prism is square form.

5. the binocular augmented reality experimental provision that multiparameter described is according to claim 1 adjustable, is characterized in that, inner core (1) external diameter 1-2mm less of urceolus (2) internal diameter.

6. the binocular augmented reality experimental provision that multiparameter according to claim 1 is adjustable, it is characterized in that, described inner core (1) by inner core (1) upper cover and inner core (1) lower cover assembled by the mutual buckle of cylindrical small-sized teeth groove on surface of contact.

7. the binocular augmented reality experimental provision that multiparameter according to claim 1 is adjustable, it is characterized in that, described eye-distance adjustment module comprises a pair cross bar (4) be movably connected by universal joint (5), and one end of every root cross bar (4) is hinged on the top of image-forming module.

8. the binocular augmented reality experimental provision that multiparameter according to claim 1 is adjustable, it is characterized in that, described electronic controlled height adjustment comprises adjuster bar (6) and base (7), adjuster bar (6) top is connected with image-forming module, adjuster bar (6) bottom is provided with external thread, base (7) inwall is provided with the internal thread suitable with external thread, and adjuster bar (6) is screwed on base (7).

9. the binocular augmented reality experimental provision that multiparameter according to claim 1 is adjustable, is characterized in that, the transparent window of described form (3) is the square of length of side 10cm.